This article is about the support of stereoscopic 3D in Dark Basic Pro, and says DBP uses its own routines, as opposed to using drivers for existing devices (in fact, it specifically mentions the need for iz3D owners to disable the existing drivers prior to running a DBP program, or they would conflict with the stereo routines of DBP.
This has an unpleasant side effect: the support to page-flipping mode is removed and many stereo 3D devices are now completely incompatible with Dark Basic Professional, like eDimensional shutterglasses, every consumer-oriented head-mounted display on the market and the nVidia 3D Vision suite. Is there a particular reason why support to stereoscopic 3D has been implemented this way?
I hope this will be addressed in the next updates to DBP, and the free version will be updated too.